Machine for removing dust by suction from carpets, furniture, curtains, tapestry, &amp;c.



No. 859.2811 l PATENTED JULY 9. 1907. j J. R. BLUM. U MACHINE PoR RBMUUNG DUST BY sUUTIoN PROM UARPBTS, FURNITURE,

CURTAINS, TAPESTRY, &U. APPLIUATIUN FILED 23.19.1906. i

afm/4 UNITED C Airis s ninriirnfrl QEFIOE.

JULES REN BLUM, 0F PARIS, FRANCE, ASSIGNOR T0 COMPANY ,LASPIRATOR, OF PRIS,

FRANCE, A CORPORATION.

MACHINE FOR REMovmG DUST BY sucnoN FROM carriers,4 FURNITURE. culirnus, TAPESTRY. in.

To all 'whom 'il may onrrrn: l

Beit known that I, JULES REN lit. n, civil engineer, a citizen or' France, residingr at 49 Boulevard- 'Pr-eire, Paris, France, have invented new and useful Improvements in Machines for Removingr Dust by Suction from Carpets, Furniture, Curtains, Tapestry, and. the. Like, ol' which the following is a speciiination.

This invention relates to an improved regula-ting device adapted to be used in connection with electrically controlled machines for removing dust by suction from carpets, furniture, curtains, tapestry and tho like.

The device consists essentially in small regulating bellows connected with the suction compartment of the machine und with thc lnmdle oi the rheosttt of the elnotric motor iu sach a manner that the degree of vacuum is autonmtirally rognlated in accord-anco with vthe resistance olicred to the passage oi' thedustdadon air by thefabric-being olcnnod. llythis 1!n::ins,1lclic1tte fabrics such as tapestry and the like can bo cle-.mod

l without getting injured as would be the case wherc the sinne powerful vacuum was applied, as would for e;-

nmple be requisite for thick carpets.

In the accompanying drawing, Figure l is a vcr-tival sectional View of a. dust removing puc-ornati(- niavhino incorporating the in'lproved regulating dovico, and Fig. 2 is a section taken on line ANA oi' Fig. l. :rnd lool;- ing to\ .rds the left.

' The dust removing inncbinn conxprisos thc' usual flexible aspiration tubo o tornilnaied in n. inotailic su 2- tion mouth o', o, filteringr rvuopI-.u'h' A thc walls ol' which consist oi' it l'l'aino of inctailic' hoops or shi-ll il :ulaph-d to permit the air 1.o pass tlwroibrough mul at tho sanno Y time to iltnr tho same, said roccpiaclo b in r arranged Within n horxneticnlly closed box which is innnovably l securcd'npon Ibo stationary lian oi iin oppor bi-ilow` l, and bellows `l, LZ, 3, 4. Each IwllowsI has n. snr-tion or inlot v-.ilvc t' :rnd :in vxpulsion or onllcl'y vaivcj. All

tho sur'iion vulvvs open tmvardsa-singio wrticfal i-oxnpnrtnwnln i: and all the impulsion val vi-s into a vurlrical f'ompnrtmont l.

'lhe bellows l, 2, 3, l uro mwralml by tho (han-ruling links a b of a. crank' .simili rf on whilh is hisi :i fly whs-olf connected by moans oi' u. bvlly IL wilh :l .small vloctric lndtoz/ inc-los-d in tho oasing L) o1 iinl nnrvhino.

'lh i inil'irovnd rvgnlafinqdevice onsis|-sois|nall bellows r scr-urteil upon a wall of thc rou-tion wunpartlnont /c und in constant. comnxnnicalion with Ihn inivrior ol' said compartnn-nt, in auch a. manina' that tho parliai var'uunl, or lowl-l'ing ol' pressure, produced by iincicciijifaiiy ojnraiml lllain bollowsl i, 3, Il, /lwiilwoys lum :in Lliccl, wilbin Ihf Iwliows r. [.'lron tinl i iovabh. flap ol Specification of Letters Patent.

Application filed April/19, 1906. Serial Nu. 312,872.

iraien'ed .July 9, 1907.

said bellows r is arranged a disclmrgo valve t which carries an adjustable stop-screw o. Moreover, the movable flap of the bellows r is connected by a cord F with the handleor lever oi the rheostat R o1' the electric motor, and the hundir-i of said rheostat is in turn connected with n. spiral spring S secured to a ixnd part of the casing of tho apparatus. 'While at rest., this spring keeps the bellows 'l' open and the handle ol' tho rheostat on the second or third contact so that when the electric circuit is closed the motor begins to run slowly.

, As soon as the Work has coninienccd, the resistance of the passage oi' nir exerted by the article that. is being cleaned, increases the vacuum in the colnpartnumt c and in the interior ot' the bellows r, so that the movable :ip o1' tho latter is lowercd, tho spring S yields and the handle ol' the rheostat is advanood, cutting out the resistant-es and conseqmintly incrcasing the speed of the motor. The result is that. the greater the resistance t-o thol passage of air ofvred by thc micio being cleaned (and consequently ina-king dein-.unis on power required for the cleaning), the greater :irc the collapse oi the bellows and tin'.` spend of the motor, und consequently the powor of the suction or lowering of pressure.

lfVhon the bellows is almost fully colin-pwd, t-hc handio :zi the rheostat stands at the Iasiv contact, :orresponding with the maximum spend of the motor. Il tho resist-anno to tho passage of air incrcasc-s still further and Londs to Close altogether the bellows r, the disclnugc' valvttis opened hy the screw n abutting against ihr fixed part of tho bellows; ilhn outcr air unters the mln'- yntrtnionl, lc and. iti'icr a few oscillations cquilibriuni is (established, the motor maintaining its maximum sprlvd.

Having now described 1n`y invnntion, what I claim :is now and desire 1.o secure by Letters Patent is:

In a machine for rvmoving dust by sul-lion I'roln unrpl's, furniture, oul'hilns, tupcutry und the liku. a rcgulnlinf: dw vir-cl comprising in coinbin'nllon simili bellows r in conltant communication with the suction dvvlrcs oi' thu nmchno, u discharge valvrl provided for on thu inox-unl.` up o1' ilu' bellows i', un' udjnstublv stop-.screw t curl-ivd by rho discharge vnlvo t, un cloctrh: motor Vr ndup'tod lo opi-rain Ihn suction devions of.' thv nnuhinl', n. rheosmt It electrically cominci-url to llu` uli-civic nlolor Jg. n tord l\` culminating.: hln: hundirl of ihr` rIu-osin( (o iluniovnhln (lap oi ihn hul- Iows i'. und n spring.: H .4m-unal lo n liked parl of thv nuxchiln und connvciud lo Ihr hanrlh` or HuA rhnosial. soislanfally as lhsri'ihcrl and for tinporposv svl, Iorl'h.

In instlnlon)y wiwi-ooi' l have shrnml my nnnnlo this spi-r-illcatlon in Ihn pri-sonriol' Iwo subscribing,l lirios-sos.

Johns nnNF: maur.

Hanson ioxn. 

